11£®You will find this map of great ________in helping you to get round Beijing.
A£®valuable¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B£®value
C£®helpful D£®cost
12£®It’s hard to imagine what progress they________in the past few months.
A£®made B£®have made
C£®had made D£®make
13£®Some scientists say it is important that the amount of air pollution in big cities________.
A£®reduce B£®be reduced
C£®reduced D£®will be reduced
14£®The two sides have finally________£¬though some small differences still exist.
A£®made a decision B£®reached an agreement
C£®settled down D£®broken up